FR3091901B1 - Noise reduction device with a honeycomb structure with oblique drilling - Google Patents

Noise reduction device with a honeycomb structure with oblique drilling Download PDF

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Publication number
FR3091901B1
FR3091901B1 FR1900548A FR1900548A FR3091901B1 FR 3091901 B1 FR3091901 B1 FR 3091901B1 FR 1900548 A FR1900548 A FR 1900548A FR 1900548 A FR1900548 A FR 1900548A FR 3091901 B1 FR3091901 B1 FR 3091901B1
Authority
FR
France
Prior art keywords
noise reduction
honeycomb structure
reduction device
layers
oblique drilling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
FR1900548A
Other languages
French (fr)
Other versions
FR3091901A1 (en
Inventor
Thierry Georges Paul Papin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Safran Aircraft Engines SAS
Original Assignee
Safran Aircraft Engines SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Safran Aircraft Engines SAS filed Critical Safran Aircraft Engines SAS
Priority to FR1900548A priority Critical patent/FR3091901B1/en
Priority to CN202080013823.1A priority patent/CN113423934A/en
Priority to EP20705427.1A priority patent/EP3914820B1/en
Priority to PCT/FR2020/050078 priority patent/WO2020152418A1/en
Priority to US17/423,633 priority patent/US20220099022A1/en
Publication of FR3091901A1 publication Critical patent/FR3091901A1/en
Application granted granted Critical
Publication of FR3091901B1 publication Critical patent/FR3091901B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
    • F02C7/04—Air intakes for gas-turbine plants or jet-propulsion plants
    • F02C7/045—Air intakes for gas-turbine plants or jet-propulsion plants having provisions for noise suppression
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02K—JET-PROPULSION PLANTS
    • F02K1/00—Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto
    • F02K1/78—Other construction of jet pipes
    • F02K1/82—Jet pipe walls, e.g. liners
    • F02K1/827—Sound absorbing structures or liners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00—Geometry
    • F05D2250/20—Three-dimensional
    • F05D2250/28—Three-dimensional patterned
    • F05D2250/283—Three-dimensional patterned honeycomb
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00—Geometry
    • F05D2250/30—Arrangement of components
    • F05D2250/31—Arrangement of components according to the direction of their main axis or their axis of rotation
    • F05D2250/314—Arrangement of components according to the direction of their main axis or their axis of rotation the axes being inclined in relation to each other
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00—Function
    • F05D2260/96—Preventing, counteracting or reducing vibration or noise
    • F05D2260/963—Preventing, counteracting or reducing vibration or noise by Helmholtz resonators
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T50/00—Aeronautics or air transport
    • Y02T50/60—Efficient propulsion technologies, e.g. for aircraft

Abstract

L’invention concerne un dispositif (18) de réduction de bruit pour une turbomachine d’aéronef, ce dispositif présentant une structure en empilement de couches (20, 22, 24), de manière à ce qu’une première et une seconde peaux (22, 24) en matériau composite forment une première et une seconde couches extérieures (22, 24), ces couches extérieures (22, 24) étant sensiblement parallèles entre elles et enserrant une couche centrale (20). Cette couche centrale (20) présente une structure en nid d’abeille comportant des cloisons (26) s’étendant transversalement de la première couche extérieure (22) vers la seconde couche extérieure (24), de manière à former des cavités (28). Les cloisons (26) sont réalisée en matériau viscoélastique, et forment, avec les première et seconde couches extérieures (22, 24), un angle d’inclinaison aigu (α). Figure pour l'abrégé : figure 4The invention relates to a noise reduction device (18) for an aircraft turbine engine, this device having a stacked structure of layers (20, 22, 24), so that a first and a second skin ( 22, 24) made of composite material form a first and a second outer layers (22, 24), these outer layers (22, 24) being substantially parallel to each other and enclosing a central layer (20). This central layer (20) has a honeycomb structure comprising partitions (26) extending transversely from the first outer layer (22) towards the second outer layer (24), so as to form cavities (28) . The partitions (26) are made of viscoelastic material, and form, with the first and second outer layers (22, 24), an acute angle of inclination (α). Figure for abstract: Figure 4

FR1900548A 2019-01-22 2019-01-22 Noise reduction device with a honeycomb structure with oblique drilling Active FR3091901B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
FR1900548A FR3091901B1 (en) 2019-01-22 2019-01-22 Noise reduction device with a honeycomb structure with oblique drilling
CN202080013823.1A CN113423934A (en) 2019-01-22 2020-01-22 Noise reduction device with obliquely pierced honeycomb structure
EP20705427.1A EP3914820B1 (en) 2019-01-22 2020-01-22 Noise reducing device having an obliquely pierced honeycomb structure
PCT/FR2020/050078 WO2020152418A1 (en) 2019-01-22 2020-01-22 Noise reducing device having an obliquely pierced honeycomb structure
US17/423,633 US20220099022A1 (en) 2019-01-22 2020-01-22 Noise reducing device having an obliquely pierced honeycomb structure

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1900548 2019-01-22
FR1900548A FR3091901B1 (en) 2019-01-22 2019-01-22 Noise reduction device with a honeycomb structure with oblique drilling

Publications (2)

Publication Number Publication Date
FR3091901A1 FR3091901A1 (en) 2020-07-24
FR3091901B1 true FR3091901B1 (en) 2020-12-25

Family

ID=67742504

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1900548A Active FR3091901B1 (en) 2019-01-22 2019-01-22 Noise reduction device with a honeycomb structure with oblique drilling

Country Status (5)

Country Link
US (1) US20220099022A1 (en)
EP (1) EP3914820B1 (en)
CN (1) CN113423934A (en)
FR (1) FR3091901B1 (en)
WO (1) WO2020152418A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3126334B1 (en) * 2021-08-30 2023-07-21 Safran Nacelles Process for manufacturing an acoustic panel with oblique cavities

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3850261A (en) * 1973-03-01 1974-11-26 Gen Electric Wide band width single layer sound suppressing panel
US5706651A (en) * 1995-08-29 1998-01-13 Burbank Aeronautical Corporation Ii Turbofan engine with reduced noise
KR100628850B1 (en) * 2004-11-03 2006-09-26 박기호 A method of producing curved honeycomb structural
FR2928415B1 (en) * 2008-03-07 2010-12-03 Aircelle Sa ACOUSTIC PANEL OF A NACELLE OF AN AIRCRAFT
FR2938014B1 (en) * 2008-11-06 2011-04-15 Aircelle Sa ACOUSTICAL ATTENUATION PANEL FOR AN AIRCRAFT ENGINE NACELLE
CN102301122B (en) * 2008-07-30 2014-05-14 埃尔塞乐公司 Acoustic attenuation panel for aircraft engine nacelle
WO2010089496A1 (en) * 2009-02-03 2010-08-12 Airbus Operations Sas Acoustic processing panel, more particularly adapted for an air intake in an aircraft nacelle
FR2984280B1 (en) * 2011-12-15 2013-12-20 Aircelle Sa AIR INTAKE STRUCTURE FOR TURBOREACTOR NACELLE
US10184398B2 (en) * 2013-10-17 2019-01-22 Rohr, Inc. Acoustic structural panel with slanted core
US10156243B2 (en) * 2015-05-04 2018-12-18 Safran Aero Boosters Sa Composite splitter lip for axial turbomachine compressor
FR3051019B1 (en) * 2016-05-03 2020-01-10 Airbus Operations STRUCTURE PROVIDING ACOUSTIC WAVE ATTENUATION AND HEAT EXCHANGE
US11498306B2 (en) * 2017-06-07 2022-11-15 Ihi Corporation Sound-absorbing panel and manufacturing method for same
US10577117B2 (en) * 2017-08-04 2020-03-03 Hexcel Corporation Angled acoustic honeycomb

Also Published As

Publication number Publication date
FR3091901A1 (en) 2020-07-24
US20220099022A1 (en) 2022-03-31
EP3914820B1 (en) 2024-02-28
CN113423934A (en) 2021-09-21
WO2020152418A1 (en) 2020-07-30
EP3914820A1 (en) 2021-12-01

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